Cody

Problem 1216. Mean ignoring NaNs

Solution 3268388

Submitted on 18 Oct 2020
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Test Suite

Test Status Code Input and Output
1   Fail
x=[1 5 9;2 6 10;3 nan 11;nan nan nan]; y_correct=[2 5.5 10]; y=average(x); assert(isequalwithequalnans(y,y_correct)) y=average(x,1); assert(isequalwithequalnans(y,y_correct)) y_correct=[5;6;7;nan]; y=average(x,2); assert(isequalwithequalnans(y,y_correct)) y_correct=x; y=average(x,3); assert(isequalwithequalnans(y,y_correct))

x = 1 5 9 2 6 10 3 0 11 0 0 0 y = 1.5000 2.7500 7.5000

Assertion failed.

2   Fail
x=cat(3,[1 5 9;NaN 6 10;NaN 7 NaN;4 8 12],... [13 17 21;14 18 22;15 19 NaN;16 20 24]); y_correct=cat(3,[15 39 62]/6,[87 111 134]/6); y=average(x); assert(isequalwithequalnans(y,y_correct)) y=average(x,1); assert(isequalwithequalnans(y,y_correct)) y_correct=cat(3,[5;8;7;8],[17;18;17;20]); y=average(x,2); assert(isequalwithequalnans(y,y_correct)) y_correct=[7 11 15;14 12 16;15 13 NaN;10 14 18]; y=average(x,3); assert(isequalwithequalnans(y,y_correct))

x(:,:,1) = 1 5 9 0 6 10 0 7 0 4 8 12 x(:,:,2) = 13 17 21 14 18 22 15 19 0 16 20 24 y(:,:,1) = 1.2500 6.5000 7.7500 y(:,:,2) = 14.5000 18.5000 16.7500

Assertion failed.

3   Fail
x=zeros(2,1,0); y_correct=mean(x); y=average(x); assert(isequalwithequalnans(y,y_correct)) y=average(x,1); assert(isequalwithequalnans(y,y_correct)) y_correct=mean(x,2); y=average(x,2); assert(isequalwithequalnans(y,y_correct)) y_correct=mean(x,3); y=average(x,3); assert(isequalwithequalnans(y,y_correct))

x = 2×1×0 empty double array y = 1×1×0 empty double array x = 2×1×0 empty double array y = 1×1×0 empty double array x = 2×1×0 empty double array y = 1×1×0 empty double array

Assertion failed.

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